Shell Programming and Scripting

#!/bin/sh

# @(#) s1       Demonstrate rsync features, copy from source to destination.

# Set, display environment with local command version.

set +o nounset
LC_ALL=C ; LANG=C ; export LC_ALL LANG
echo "Environment: LC_ALL = $LC_ALL, LANG = $LANG"
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version "=o" $(_eat $0 $1) rsync
set -o nounset

debug=":"
debug="echo"

# Remove previous debris.

S=source
D=destination
B=backup

rm -rf $S $D
mkdir $S $D

cd $S
echo one >t1
echo two >t2
echo thr >t3
echo fou >t4
echo fiv >t5
cd ..
cp $S/* $D

# Create anomalies, delete one file, create a structure not to be
# copied.

mkdir $S/not-backed-up
touch $S/not-backed-up/a-junk-file
rm $S/t3

echo
echo " Structures:"

tree -F $S
tree -F $D

# Back date the destination.

backdate=$( date --date="5 minutes ago" )
$debug " now = $(date);  backdate = :$backdate:"

touch --date="$backdate" $D/*

echo
echo " $S:"
ls -lgG $S

echo
echo " $D:"
ls -lgG $D

# The easiest way to see what name you should include/exclude
# is to just look at the output when using --verbose and
# put a / in front of the name (use the --dry-run option if
# you're not yet ready to copy any files).
# --dry-run --verbose

echo
echo " Results from rsync:"
rsync \
--verbose \
-abv --exclude=/not-backed-up/ --delete \
--backup-dir=$B --suffix=.orig $S/ $D/

echo
echo " $D, final"
ls -lgG $D

echo
echo " $D/$B"
ls -lgG $D/$B

echo
echo " Diff of $S and $D"
diff -r $S $D

exit 0

% ./s1
Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
Linux 2.6.11-x1
GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu)
rsync  version 2.6.3  protocol version 28

 Structures:
source
|-- not-backed-up/
|   `-- a-junk-file
|-- t1
|-- t2
|-- t4
`-- t5

1 directory, 5 files
destination
|-- t1
|-- t2
|-- t3
|-- t4
`-- t5

0 directories, 5 files
 now = Thu Aug 21 17:41:20 CDT 2008;  backdate = :Thu Aug 21 17:36:20 CDT 2008:

 source:
total 16
drwxr-xr-x  2 80 Aug 21 17:41 not-backed-up
-rw-r--r--  1  4 Aug 21 17:41 t1
-rw-r--r--  1  4 Aug 21 17:41 t2
-rw-r--r--  1  4 Aug 21 17:41 t4
-rw-r--r--  1  4 Aug 21 17:41 t5

 destination:
total 20
-rw-r--r--  1 4 Aug 21 17:36 t1
-rw-r--r--  1 4 Aug 21 17:36 t2
-rw-r--r--  1 4 Aug 21 17:36 t3
-rw-r--r--  1 4 Aug 21 17:36 t4
-rw-r--r--  1 4 Aug 21 17:36 t5

 Results from rsync:
backup_dir is backup/
building file list ...
[sender] expand file_list to 131072 bytes, did move
[sender] excluding directory not-backed-up because of pattern /not-backed-up/
done
[receiver] expand file_list to 131072 bytes, did move
deleting in .
backed up t3 to backup/t3.orig
deleting t3
delta-transmission disabled for local transfer or --whole-file
t1
t2
t4
t5
backed up t1 to backup/t1.orig
backed up t2 to backup/t2.orig
backed up t4 to backup/t4.orig
backed up t5 to backup/t5.orig
total: matches=0  tag_hits=0  false_alarms=0 data=16

sent 323 bytes  received 100 bytes  846.00 bytes/sec
total size is 16  speedup is 0.04

 destination, final
total 16
drwxr-xr-x  2 168 Aug 21 17:41 backup
-rw-r--r--  1   4 Aug 21 17:41 t1
-rw-r--r--  1   4 Aug 21 17:41 t2
-rw-r--r--  1   4 Aug 21 17:41 t4
-rw-r--r--  1   4 Aug 21 17:41 t5

 destination/backup
total 20
-rw-r--r--  1 4 Aug 21 17:36 t1.orig
-rw-r--r--  1 4 Aug 21 17:36 t2.orig
-rw-r--r--  1 4 Aug 21 17:36 t3.orig
-rw-r--r--  1 4 Aug 21 17:36 t4.orig
-rw-r--r--  1 4 Aug 21 17:36 t5.orig

 Diff of source and destination
Only in destination: backup
Only in source: not-backed-up